Finding the Fourth Proportional to 2,628,431.79, 3,628,878.02 and 2,015,406.99
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Solution
The fourth proportional to 2,628,431.79, 3,628,878.02 and 2,015,406.99 is: 2,782,520.80
Step by Step Solution
- Step 1: Write the proportion equation
2,628,431.79 : 3,628,878.02 = 2,015,406.99 : x - Step 2: Convert to fraction form
2,628,431.79/3,628,878.02 = 2,015,406.99/x - Step 3: Cross multiply
2,628,431.79x = 3,628,878.02 × 2,015,406.99 - Step 4: Simplify right side
2,628,431.79x = 7,313,666,117,288.33 - Step 5: Solve for x
x = 7,313,666,117,288.33/2,628,431.79 - Step 6: Final answer
x = 2,782,520.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.